package org.xg.study.pd;

import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;

/**
 * @author CMG
 * @version 1.0
 * @cLassName Singleton_00
 * @description 静态类实现
 * @date 2021/9/13 14:54
 **/
public class Singleton_00 {
    public static Map<String ,String> cache = new ConcurrentHashMap<>();
}
